Spring-motor mechanism.



F. MAGIDSON.

SPRING MOTOR MECHANISM. APPLICATION FILED'MAR. 22. 1916.

WITNESSES INVENTOR Lyman WASHING rw Patented J an. 16, 1917.

JACOB avis, on UNIONTOWN, PnNNsYLvAma.

SPRING-MOTOR MECHANISM.

To all whoin it'may concem: V

Be it known that I, FRANKMAGIDSON, a

citizen of the United States, and residentof 4 Brownsville, in thecountyof Fayetteand State ofPennsylvania, have inventedj'certain newand. useful Improvements in Spring-Motor Mechanism, of which thefollowing is a specification. 1 f

This invention relates to a spring motor designed primarily foroscillating a cradle or other swinging body, and one object is toprovide an escapement of novel construction for transmitting positiveback and forth movements to such body. The escapement mechanism is of vatype wherein oppositely arranged levers coact' with different portionsofa toothed escapement Wheel, and one of the objects herein is toprovide improved means for connecting the levers located at oppositesidesof the'sha ft which carries the ratchet wheel.

In the accompanying drawings Flg ure 1 is a longitudinal sectionalelevation of .the im'-' proved motormechanism, and Fig. 2 is a similarview of the, escapement end of the mechanism, taken at right angles toFig. 1.

Fig. 3 is a cross section on line 33 of F ig.

1. Fig. & is a cross section on line 4,-4 of Fig. 1. Fig. 5 is a detailview of the washerlike element interposed between the core sections. j 7

The motor mechanism is preferably arranged within and 1 supported by anelongated casingv ,13 of rectangular form which may be secured at itsopposite ends by cross-bars 8 and 8, of a support of suitable form..This casing isclosed at one end by head 14 in which is formed a bearingfor the short shaft 15, the squared extremity 15' of the latter beingadapted to receive a crank for winding up the motor. Carried bythe innerend of this shaft is the peripherallytoothed sprocket wheel 17, andprojecting inwardly therefrom 1 s the core or spool-like support for theelongated coiled motor spring 18. The" spool or core is formed insections, 20 being the end section secured by lugs 19 and'pin 19 to theinner side of ratchet wheel 17. 21 designates the inner end sectionofthe corewhich is nonrotatably supported by pin 22, the latter disposeddiagonally in casing 13 with its extremities, confined in, the casingangles as shown. Between theend sections, 20 and 21 are the intermediatesections 23, which are Specification of Letters Patent.

' A man met with 22, 1916. serial a... 85,332.

Patented Jan. 16, 1917.

rotatable on a shaft 24 extending therethrough, and wlththe oppositeends of said shaft grooved at 24 and rotatably confined;

in core sections 20 and 21 by screws 25-. Thus it will be seen that theonly. non-rotatable portion of thecore is the innermost sectlon 21', theopposite end section-20 and the intermediate sections 23 being rotatablerelatively toea'ch other, and asconnecting shaft 24 is tself rotatablyheld, the movable spool sections may rotate either with said shaft orindependently thereof. By

this means every possible facility is provided for preventing the motorspring 18 when wound up from deflecting laterally and so gripping andbinding the core as to lnterfere with a uniform and regular applicationof the spring force to the driven mechanism. Thus, even if the lateralde flectionof the spring at one point tends to gr p one section'fof thecore, the remaining sections are in no wise affected and may turn freelyin response to the unwinding action of the spring. ,1 V

Interposed between the adjacent spool sec-' tions are the washer-likeplates or heads 26 having their edges notched and with the re. sultingpoint like projections'27 bent or de flected'in opposite directions tooverhang the adjacent spool sections, thereby bridging the joint betweenthe sections and preventing convolutions. ofspring ,18 from workingtherebetween wh ch if permitted might result in clogging the mechanismand seriously impairing the operation. Plates 26 are loosely arrangedandmay turn either withv the spool-section s, or if impinged by thespring may be held against turning without retarding'the operation. a

The escapement mechanism which 00- operates with ratchet wheel 17 isembodied in the two levers 30 and 31 arranged at oppositesides'of shaft'15 and extending past: opposite portions of the ratchetwheel periphery.These levers are'pivoted at-thei'r inner ends at 30 and Y31.respectively, to a plate 32 secured to theiannularboss 32 of easing head14:. Thelevers are connected for unitary movement by the bodily movablering-like link, 33 encircling shaft 15, an arm 34. projecting fromleve'r30. and pivoted to said link at 34, and a similar arm 35 projecting fromthe opposite side of lever-.31 and pivotally connected at 35 to link'33.Lever 30 extends through a slot in the top of casing 13 and is enteredin notch lug 10 of link 10, whereby the vibrations of said lever areimparted to the body to be vibrated. V

Pivoted to levers 30 and 31, respectively, are the oppositely disposeddogs or pawls 36 and 37 which are adapted to engage the notches of wheel17 v as in Figs. 1 and 3. A spring 38 connects dog 36 with pivot post 30of lever 30, and a like spring 39 similarly connects dog 37 with post 31of lever With the parts thus arranged, it will be seen that movement oflevers 30 and 31 in either direction from a straight line position willplace the springs 38 and 39 under tension which results in pivotallymoving dogs 36 and 37 either into or out of engage ment with the teethof'ratchet 17,. depend-. ing on the direction of movement'of the levers.Thus, with the levers in the position shbwn in Fig. 4, the movement oflever 30 toward the left has resulted in so deflect-- ing spring 33 asto cause dog 36 to engage the ratchet as seen in Fig. 3, and at the sametime the opposite deflection of spring 39 has resulted in a reversemovement of dog 37, thereby disengaging it from the ratchet wheel. Themovements thus de; scribed result from the arrangement, char-'acteristic of the present invention, whereby the link -connected levers30 and 31' move simultaneously in the same direction first toward oneside of the casing and then to.- ward the opposite side.

It is further characteristic ofthe escapement mechanism that the lovers;30 and 31.

are positively impelled through each vibra-' tion'thereof, and theresult'of this is that the swinging body is positively. driven througheach oscillation, and not simply driven through the oscillations in onevdirection and with the momentum thereOf depended on for the oppositeoscillations. This positive movement in each direction results from thecooperation of the pivoted dogs with the ratchet. Thus, as lever 30moves toward the right from the position shown-in Figs. 3 and 4, theunwinding or impelling' movement of the portion of ratchet 17 engaged bydog 36 is in the same direction; whereas the corresponding movement ofdog 37 with the portion'of Wheel 17 which it is to engage is indirection 0pposite'to'the movement of said wheel portion, so that thewheel and dog 37 are brought into engagement when moving in oppositedirections," and thereby dog 37 is c positively engaged withthe'opposite ratchet tooth by the time lever 30 has been shiftedsuliiciently far to the right to disengage dog 36. Hence, for the nextbeat or oscillationdog '37 is in positive engagementwith and moves" withratchet 17 when the, above described operation is'repeated exceptingthat e er '3 is hen a t i r mitting. he.

force from ratchet 17 While lever 30 is moving its dog 36 into a newoperative position. With levers 30 and 3lconnected by the bodily movablering-like link 33 the levers are properly united and caused to move inunison notwithstanding vtheir arrangement at opposite sides of shaft 15.

The arrangementis such that upon stopping the body being vibrated thedog-carrying levers hold'the mechanism still or inoperative until thebody is again started to swing, whereupon the escapement willimmediately become active and will continue to-operate until the body isagain stopped. or until the mo o ha vbeen c mp e ely unwound.

That portion ot the tructure relating to the motor-- spring and' themounting; therefor is claimed in my application filed July 15, 191Serial No. 109,423. a

- I le mi 1. pring motor mechanism Comprising a spring impelled ratchetwheel, two levers extending to different portions of the periphery ofthe wheel and each having a fixedpivotal mounting, a connecting deviceto'which each lever is'pivoted, ;said device extending ar und thewheel-axis-and adapted to move bodily when the levers are moved,

v n r e y isp sed dogs p ed to the levers,

' erse y disposed gs pi oted to the. e er 1o springs actuated by themovements of the levers for engaging one dog with the said wheel andsimultaneously disengaging the other; dog therefrom, and a body mountedto oscillate and operativelyconneotedto one ofthe levers: r

'3. A spring motor mechanism comprising a spring-impelled shaft,aratchet wheel secured to said shaft, a fixed support extending toopposite sides of the s'haft, levers 12c pivoted at their inner ends tothe Support nd i h t ei f ee portions, extending to.- ward difi'erentportions Of thev wheel periphery, a bodily movable link extendingaroundsai sh f an t opposite sides of the latter pivotally connected to therespective levers whereby the, free portions of the levers are caused tomo e simul ne sly he same directi n, reversal d sposed dogs; pi ted tothe respective levers, means actuated by the 1 movements of the leversfor engaging one dog with the ratchet Wheel and simultaneouslydisengaging the other dog therefrom and vice versa, and a body mountedto oscillate and operatively connected to one of the levers.

4. A spring motor mechanism comprising a spring-impelled ratchet Wheel,two levers having fixed pivotal mountings at opposite sides of the Wheelaxis and extending in opposite directions therefrom, a bodily movablelink extending around the wheel axis, arms extending in oppositedirections from the respective levers with said arms pivotally connectedto opposite portions of said link, reversely disposed dogs pivotallymounted on the respective levers, springs actuated FRANK MAGIDSON.

In the presence of-- JOHN S. GRIFFITHS, N. R. BYLAND.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington. D. C.

